I'm not seeing signs that the open category is evening out... yet.
What i am seeing though is that the intermediate categories are strongly dominated by people, mostly young but too old for the youth track, who are trained in a more mature school of thought, which takes advantage of their youth more for its enthusiam and free time than its athletic potential. I think this group is likely to have a far greater longetivity in the dance community than the olympic-athlete crowd, because they will be more able to continue making progress as they age.
A well rounded community of highly skilled dancers, even if a level down from the top can still create an influence on the top level, by keeping an alternative look in the eye of both public and judges - and by giving the judges something they don't alway have today: a viable alternative to mark whenever they get tired of juvenile antics.